---
OA_type: closed access
_id: '21406'
abstract:
- lang: eng
text: 'This preliminary study investigates the trace-element composition of ostracod
shells (Ostracoda: Crustacea) as biogenic calcium carbonates in their role as
environmental sentinels of pollution. Using high-resolution in-situ analysis,
we compared two contrasting coastal systems: the highly urbanized seascape of
metropolitan megacity Hong Kong (HKSAR) and the agriculturally dominated waters
of rural retreat Jeju Island, Republic of Korea (ROK). The goal was to assess
whether anthropogenic stress gradients affect trace element-to‑calcium ratios
(E/Ca) in the carapaces of shallow-marine Neonesidea Maddocks, 1969 species. Hereby,
the focus is laid on potential differences in the effects of extreme urbanization
and extreme agriculturalization. We analyzed 12 trace elements commonly incorporated
into ostracod shells using Inductively Coupled Plasma–Mass Spectrometry (ICP-MS).
Only Mn/Ca, Mg/Ca, and Ni/Ca ratios showed strong correlations with specific seawater
physicochemical parameters. Notably, Mn/Ca differed significantly between the
two sites, seemingly driven mainly by variations in nitrite nitrogen levels. This
suggests that Mn incorporation is sensitive to pollution source, urban versus
agricultural, though species-specific uptake effects cannot be excluded. No significant
differences in elemental uptake were found between adult and A-1 juvenile stages
of Neonesidea mutsuensis Ishizaki, 1961 or Neonesidea elegans (Brady, 1969), supporting
the use of both age groups in environmental reconstructions and increasing potential
sample yields. While remaining empirical and exploratory, our tentative findings
suggest that ostracod geochemistry holds promise for marine pollution monitoring
and cautiously supports the application of ostracod Mn/Ca ratios to reconstruct
anthropogenic, particularly nitrogen-related, impacts in nearshore environments
using sediment core records.'
acknowledgement: 'We thank the KIOST staff of the Jeju Marine Research Center for
assisting sample collection, the research assistants and students of the Yoon Idea
Lab led by Prof. Dr. Tae-Hyun Yoon at Hanyang University for facilitating and assisting
in ICP-MS test runs involved in a pilot study preceding this study, Ms. Garance
Perrois and Mr. Léonard Pons for assistance with statistics-related questions, and
the two anonymous reviewers for their valuable comments and suggestions. The study
described in this article was partially supported by grants from the Brain Pool
Program through NRF funded by the Ministry of Science and ICT (reference code: 2019H1D3A1A01070922
to ABJ), by the Ministry of Oceans and Fisheries (grant number RS-2024-00406249
to TK), by the Korea Institute of Marine Science and Technology (KIMST), funded
by the Ministry of Oceans and Fisheries (grant number RS-2025-02304432 to TK), and
by the Korea Institute of Ocean Science and Technology (PEA0404 to TK).'
article_number: '119493'
article_processing_charge: No
article_type: original
author:
- first_name: Anna B.
full_name: Jöst, Anna B.
last_name: Jöst
- first_name: Maximiliano J
full_name: Rodriguez Moreno, Maximiliano J
id: 59bea3b2-8c82-11ef-a41a-af7b0efd9065
last_name: Rodriguez Moreno
- first_name: Taihun
full_name: Kim, Taihun
last_name: Kim
- first_name: David M.
full_name: Baker, David M.
last_name: Baker
- first_name: Moriaki
full_name: Yasuhara, Moriaki
last_name: Yasuhara
- first_name: Christelle A.
full_name: Not, Christelle A.
last_name: Not
- first_name: Ivana
full_name: Karanovic, Ivana
last_name: Karanovic
citation:
ama: Jöst AB, Rodriguez Moreno MJ, Kim T, et al. Ostracod shell chemistry as proxy
for coastal marine conditions of a highly urbanized megacity (Hong Kong SAR) and
an agro-centric oceanic province (Jeju Island, Republic of Korea) – a preliminary
comparative analysis. Marine Pollution Bulletin. 2026;227(6). doi:10.1016/j.marpolbul.2026.119493
apa: Jöst, A. B., Rodriguez Moreno, M. J., Kim, T., Baker, D. M., Yasuhara, M.,
Not, C. A., & Karanovic, I. (2026). Ostracod shell chemistry as proxy for
coastal marine conditions of a highly urbanized megacity (Hong Kong SAR) and an
agro-centric oceanic province (Jeju Island, Republic of Korea) – a preliminary
comparative analysis. Marine Pollution Bulletin. Elsevier. https://doi.org/10.1016/j.marpolbul.2026.119493
chicago: Jöst, Anna B., Maximiliano J Rodriguez Moreno, Taihun Kim, David M. Baker,
Moriaki Yasuhara, Christelle A. Not, and Ivana Karanovic. “Ostracod Shell Chemistry
as Proxy for Coastal Marine Conditions of a Highly Urbanized Megacity (Hong Kong
SAR) and an Agro-Centric Oceanic Province (Jeju Island, Republic of Korea) – a
Preliminary Comparative Analysis.” Marine Pollution Bulletin. Elsevier,
2026. https://doi.org/10.1016/j.marpolbul.2026.119493.
ieee: A. B. Jöst et al., “Ostracod shell chemistry as proxy for coastal marine
conditions of a highly urbanized megacity (Hong Kong SAR) and an agro-centric
oceanic province (Jeju Island, Republic of Korea) – a preliminary comparative
analysis,” Marine Pollution Bulletin, vol. 227, no. 6. Elsevier, 2026.
ista: Jöst AB, Rodriguez Moreno MJ, Kim T, Baker DM, Yasuhara M, Not CA, Karanovic
I. 2026. Ostracod shell chemistry as proxy for coastal marine conditions of a
highly urbanized megacity (Hong Kong SAR) and an agro-centric oceanic province
(Jeju Island, Republic of Korea) – a preliminary comparative analysis. Marine
Pollution Bulletin. 227(6), 119493.
mla: Jöst, Anna B., et al. “Ostracod Shell Chemistry as Proxy for Coastal Marine
Conditions of a Highly Urbanized Megacity (Hong Kong SAR) and an Agro-Centric
Oceanic Province (Jeju Island, Republic of Korea) – a Preliminary Comparative
Analysis.” Marine Pollution Bulletin, vol. 227, no. 6, 119493, Elsevier,
2026, doi:10.1016/j.marpolbul.2026.119493.
short: A.B. Jöst, M.J. Rodriguez Moreno, T. Kim, D.M. Baker, M. Yasuhara, C.A. Not,
I. Karanovic, Marine Pollution Bulletin 227 (2026).
das_tickbox: '1'
dataavailabilitystatement: The datasets analysed during the current study are available
within the manuscript and the associated supplementary materials.
date_created: 2026-03-08T23:01:44Z
date_published: 2026-06-01T00:00:00Z
date_updated: 2026-07-29T10:09:31Z
day: '01'
department:
- _id: FrPe
doi: 10.1016/j.marpolbul.2026.119493
external_id:
pmid:
- '41774948'
intvolume: ' 227'
issue: '6'
language:
- iso: eng
month: '06'
oa_version: None
pmid: 1
publication: Marine Pollution Bulletin
publication_identifier:
eissn:
- 1879-3363
issn:
- 002-5326X
publication_status: published
publisher: Elsevier
quality_controlled: '1'
researchdata_availability: yes
scopus_import: '1'
status: public
supplementarymaterial: yes
title: Ostracod shell chemistry as proxy for coastal marine conditions of a highly
urbanized megacity (Hong Kong SAR) and an agro-centric oceanic province (Jeju Island,
Republic of Korea) – a preliminary comparative analysis
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 227
year: '2026'
...